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Move the transform matrix computation out of the for loop

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This commit is contained in:
Frederic Junod
2019-05-14 15:39:06 +02:00
parent f76b9bdd07
commit 98ee52c61c
1 changed files with 4 additions and 4 deletions
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src/ol/renderer/canvas/VectorTileLayer.js
+4 -4
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@@ -626,12 +626,12 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
context.setTransform.apply(context, canvasTransform); context.setTransform.apply(context, canvasTransform);
} }
const tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent); const tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent);
const pixelScale = renderPixelRatio / resolution;
const transform = resetTransform(this.tmpTransform_);
scaleTransform(transform, pixelScale, -pixelScale);
translateTransform(transform, -tileExtent[0], -tileExtent[3]);
for (let i = 0, ii = executorGroups.length; i < ii; ++i) { for (let i = 0, ii = executorGroups.length; i < ii; ++i) {
const executorGroup = executorGroups[i]; const executorGroup = executorGroups[i];
const pixelScale = renderPixelRatio / resolution;
const transform = resetTransform(this.tmpTransform_);
scaleTransform(transform, pixelScale, -pixelScale);
translateTransform(transform, -tileExtent[0], -tileExtent[3]);
executorGroup.execute(context, transform, 0, {}, true, IMAGE_REPLAYS[layer.getRenderMode()]); executorGroup.execute(context, transform, 0, {}, true, IMAGE_REPLAYS[layer.getRenderMode()]);
} }
replayState.renderedTileResolution = tile.wantedResolution; replayState.renderedTileResolution = tile.wantedResolution;